app: add delete saved news 3

FireLord · Apr 22, 2023 · 8313df4 · 8313df4
1 parent 1ac3674
commit 8313df4
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Showing 9 changed files with 68 additions and 6 deletions.
diff --git a/app/src/main/java/com/firelord/slidenews/SavedFragment.kt b/app/src/main/java/com/firelord/slidenews/SavedFragment.kt
@@ -6,10 +6,13 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import androidx.navigation.fragment.findNavController
+import androidx.recyclerview.widget.ItemTouchHelper
 import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
 import com.firelord.slidenews.databinding.FragmentSavedBinding
 import com.firelord.slidenews.presentation.adapter.NewsAdapter
 import com.firelord.slidenews.presentation.viewModel.NewsViewModel
+import com.google.android.material.snackbar.Snackbar
 
 class SavedFragment : Fragment() {
     private lateinit var fragmentSavedBinding: FragmentSavedBinding
@@ -42,6 +45,36 @@ class SavedFragment : Fragment() {
             newsAdapter.differ.submitList(it)
 
         }
+
+        val itemTouchHelperCallback = object : ItemTouchHelper.SimpleCallback(
+            ItemTouchHelper.UP or ItemTouchHelper.DOWN,
+            ItemTouchHelper.LEFT or ItemTouchHelper.RIGHT
+        ){
+            override fun onMove(
+                recyclerView: RecyclerView,
+                viewHolder: RecyclerView.ViewHolder,
+                target: RecyclerView.ViewHolder
+            ): Boolean {
+                return true
+            }
+
+            override fun onSwiped(viewHolder: RecyclerView.ViewHolder, direction: Int) {
+                val position = viewHolder.adapterPosition
+                val article = newsAdapter.differ.currentList[position]
+                viewModel.deleteArticle(article)
+                Snackbar.make(view,"Deleted Successfully",Snackbar.LENGTH_LONG)
+                    .apply {
+                        setAction("Undo"){
+                            viewModel.saveArticle(article)
+                        }
+                        show()
+                    }
+            }
+
+        }
+        ItemTouchHelper(itemTouchHelperCallback).apply {
+            attachToRecyclerView(fragmentSavedBinding.rvSaved)
+        }
     }
 
     private fun initRecyclerView(){

diff --git a/app/src/main/java/com/firelord/slidenews/data/db/ArticleDAO.kt b/app/src/main/java/com/firelord/slidenews/data/db/ArticleDAO.kt
@@ -1,6 +1,7 @@
 package com.firelord.slidenews.data.db
 
 import androidx.room.Dao
+import androidx.room.Delete
 import androidx.room.Insert
 import androidx.room.OnConflictStrategy
 import androidx.room.Query
@@ -15,4 +16,7 @@ interface ArticleDAO {
 
     @Query("SELECT * FROM articles")
     fun getAllArticles():Flow<List<Article>>
+
+    @Delete
+    suspend fun deleteArticle(article: Article)
 }
diff --git a/app/src/main/java/com/firelord/slidenews/data/repository/NewsRepositoryImpl.kt b/app/src/main/java/com/firelord/slidenews/data/repository/NewsRepositoryImpl.kt
@@ -41,7 +41,7 @@ class NewsRepositoryImpl(
     }
 
     override suspend fun deleteNews(article: Article) {
-        TODO("Not yet implemented")
+        newsLocalDataSource.deleteArticlesFromDB(article)
     }
 
     override fun getSavedNews(): Flow<List<Article>> {

diff --git a/app/src/main/java/com/firelord/slidenews/data/repository/dataSource/NewsLocalDataSource.kt b/app/src/main/java/com/firelord/slidenews/data/repository/dataSource/NewsLocalDataSource.kt
@@ -6,4 +6,5 @@ import kotlinx.coroutines.flow.Flow
 interface NewsLocalDataSource {
     suspend fun saveArticleToDB(article: Article)
     fun getSavedArticles():Flow<List<Article>>
+    suspend fun deleteArticlesFromDB(article: Article)
 }
diff --git a/...ain/java/com/firelord/slidenews/data/repository/dataSourceImpl/NewsLocalDataSourceImpl.kt b/...ain/java/com/firelord/slidenews/data/repository/dataSourceImpl/NewsLocalDataSourceImpl.kt
@@ -16,4 +16,8 @@ class NewsLocalDataSourceImpl(
         return articleDAO.getAllArticles()
     }
 
+    override suspend fun deleteArticlesFromDB(article: Article) {
+        articleDAO.deleteArticle(article)
+    }
+
 }
diff --git a/app/src/main/java/com/firelord/slidenews/presentation/di/FactoryModule.kt b/app/src/main/java/com/firelord/slidenews/presentation/di/FactoryModule.kt
@@ -1,6 +1,7 @@
 package com.firelord.slidenews.presentation.di
 
 import android.app.Application
+import com.firelord.slidenews.domain.usecase.DeleteSavedNewsUseCase
 import com.firelord.slidenews.domain.usecase.GetNewsHeadlinesUseCase
 import com.firelord.slidenews.domain.usecase.GetSavedNewsUseCase
 import com.firelord.slidenews.domain.usecase.GetSearchedNewsUseCase
@@ -23,14 +24,16 @@ class FactoryModule {
         getNewsHeadlinesUseCase: GetNewsHeadlinesUseCase,
         getSearchedNewsUseCase: GetSearchedNewsUseCase,
         saveNewsUseCase: SaveNewsUseCase,
-        getSavedNewsUseCase: GetSavedNewsUseCase
+        getSavedNewsUseCase: GetSavedNewsUseCase,
+        deleteSavedNewsUseCase: DeleteSavedNewsUseCase
     ):NewsViewModelFactory{
         return NewsViewModelFactory(
             application,
             getNewsHeadlinesUseCase,
             getSearchedNewsUseCase,
             saveNewsUseCase,
-            getSavedNewsUseCase
+            getSavedNewsUseCase,
+            deleteSavedNewsUseCase
         )
     }
 }
diff --git a/app/src/main/java/com/firelord/slidenews/presentation/di/UseCaseModule.kt b/app/src/main/java/com/firelord/slidenews/presentation/di/UseCaseModule.kt
@@ -1,6 +1,7 @@
 package com.firelord.slidenews.presentation.di
 
 import com.firelord.slidenews.domain.repository.NewsRepository
+import com.firelord.slidenews.domain.usecase.DeleteSavedNewsUseCase
 import com.firelord.slidenews.domain.usecase.GetNewsHeadlinesUseCase
 import com.firelord.slidenews.domain.usecase.GetSavedNewsUseCase
 import com.firelord.slidenews.domain.usecase.GetSearchedNewsUseCase
@@ -46,4 +47,12 @@ class UseCaseModule {
     ): GetSavedNewsUseCase {
         return GetSavedNewsUseCase(newsRepository)
     }
+
+    @Singleton
+    @Provides
+    fun provideDeleteSavedNewsUseCase(
+        newsRepository: NewsRepository
+    ): DeleteSavedNewsUseCase {
+        return DeleteSavedNewsUseCase(newsRepository)
+    }
 }
diff --git a/app/src/main/java/com/firelord/slidenews/presentation/viewModel/NewsViewModel.kt b/app/src/main/java/com/firelord/slidenews/presentation/viewModel/NewsViewModel.kt
@@ -13,6 +13,7 @@ import androidx.lifecycle.viewModelScope
 import com.firelord.slidenews.data.model.APIResponse
 import com.firelord.slidenews.data.model.Article
 import com.firelord.slidenews.data.util.Resource
+import com.firelord.slidenews.domain.usecase.DeleteSavedNewsUseCase
 import com.firelord.slidenews.domain.usecase.GetNewsHeadlinesUseCase
 import com.firelord.slidenews.domain.usecase.GetSavedNewsUseCase
 import com.firelord.slidenews.domain.usecase.GetSearchedNewsUseCase
@@ -27,7 +28,8 @@ class NewsViewModel(
     private val getNewsHeadlinesUseCase: GetNewsHeadlinesUseCase,
     private val getSearchedNewsUseCase: GetSearchedNewsUseCase,
     private val saveNewsUseCase: SaveNewsUseCase,
-    private val getSavedNewsUseCase: GetSavedNewsUseCase
+    private val getSavedNewsUseCase: GetSavedNewsUseCase,
+    private val deleteSavedNewsUseCase: DeleteSavedNewsUseCase
 ) : AndroidViewModel(app) {
     val newsHeadLines : MutableLiveData<Resource<APIResponse>> = MutableLiveData()
 
@@ -108,4 +110,8 @@ class NewsViewModel(
             emit(it)
         }
     }
+
+    fun deleteArticle(article: Article) = viewModelScope.launch {
+        deleteSavedNewsUseCase.execute(article)
+    }
 }
diff --git a/app/src/main/java/com/firelord/slidenews/presentation/viewModel/NewsViewModelFactory.kt b/app/src/main/java/com/firelord/slidenews/presentation/viewModel/NewsViewModelFactory.kt
@@ -3,6 +3,7 @@ package com.firelord.slidenews.presentation.viewModel
 import android.app.Application
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.ViewModelProvider
+import com.firelord.slidenews.domain.usecase.DeleteSavedNewsUseCase
 import com.firelord.slidenews.domain.usecase.GetNewsHeadlinesUseCase
 import com.firelord.slidenews.domain.usecase.GetSavedNewsUseCase
 import com.firelord.slidenews.domain.usecase.GetSearchedNewsUseCase
@@ -13,9 +14,10 @@ class NewsViewModelFactory(
     private val getNewsHeadlinesUseCase: GetNewsHeadlinesUseCase,
     private val getSearchedNewsUseCase: GetSearchedNewsUseCase,
     private val saveNewsUseCase: SaveNewsUseCase,
-    private val getSavedNewsUseCase: GetSavedNewsUseCase
+    private val getSavedNewsUseCase: GetSavedNewsUseCase,
+    private val deleteSavedNewsUseCase: DeleteSavedNewsUseCase
 ):ViewModelProvider.Factory {
     override fun <T : ViewModel> create(modelClass: Class<T>): T {
-        return NewsViewModel(app, getNewsHeadlinesUseCase, getSearchedNewsUseCase, saveNewsUseCase, getSavedNewsUseCase) as T
+        return NewsViewModel(app, getNewsHeadlinesUseCase, getSearchedNewsUseCase, saveNewsUseCase, getSavedNewsUseCase, deleteSavedNewsUseCase) as T
     }
 }